Answer:(a² - 4b² - 9)(a² - 4b² + 9)
(a^4 - 8a²b² + 16b^4) - 81
= [(a²)² - 2.4a²b² + (4b²)²] - 9²
= (a² - 4b²)² - 9²
= (a² - 4b² - 9)(a² - 4b² + 9)
Step-by-step explanation:
Answer:
vvvvv
Step-by-step explanation:
#1 331-7 = 324
324/6 = 54
54 students were in each bus.
#2 36-16=20
20x2=40
40/2 = 20 + 16 = 36
Jill had 40 comic books to start with.
Hope this helps :)
Please mark brainliest xo
- Square Area:
, with s = length of side
Plug in the side length into the square area and solve for the area as such:
<u>The area of the pool is 9a^10 un^2.</u>
<h2>
Answer:</h2>
(a) Describe a property of squares that is also a property of rhombi =
- The sides are the same length. The opposite angles are equal.
- Each of the diagonals is the same length and intersects at right angles to each other.
- The point of intersection of the diagonals divides the diagonal into two equal parts.
- Has two axes of symmetry.
- Can be framed with exactly four ways.
- Has a half-turn symmetry.
(b) Describe a property of squares that is not a property of rhombi =
- Has 4 axes of symmetry and rotational symmetry level 4
- Can occupy it in 8 ways
- All four sides are the same length (AB = SM = CD = AD)
- Parallel sides (AB // CD and BC // AD)
- Each angle is the same size as a square
- The diagonals are the same length (BD = AC)
- The diagonals intersect at right angles and bisect the length (AO = OC = BO = OD)
(c) Describe a property of squares that is not a property of rhombi =
- Opposite sides are parallel and the same length (AB = DC and AB // DC, AD = BC and AD // BC) The opposite angles are equal ( and).
- Two adjacent angles are 180o or are complementary.
- Sum of all angles = 360o Its diagonals divide the parallelogram into two equal parts.
(d) Describe a property of rectangles that is not a property of parallelograms =
- Has four sides that are the same length.
- Has four right angles.
- Has two diagonals that intersect at right angles to each other.
- Has quadruple symmetry rectangular.
